[1] It is also referred to as raskas sinko (heavy recoilless rifle),[1] or colloquially as Musti ("Mutt").
The weight of the weapon system is 140 kg[citation needed] and its caliber is 95 mm (3.75 inches).
Its HEAT ammunition is equipped with a strengthened nose section to better its effectiveness against explosive reactive armour (ERA).
The weapon team consists of 8 men: leader, shooter, loader/reserve shooter and two ammunitions handlers plus the reserve leader and two extra men armed with M72 LAWs and APILAS (currently being replaced by the 102 RSLPSTOHJ NLAW) anti-tank weapons for close defense.
The group moves in the terrain to their firing position by running and pulling the weapon behind them, and this is popularly called "walking the Musti".